999913333 has 2 divisors, whose sum is σ = 999913334. Its totient is φ = 999913332.

The previous prime is 999913303. The next prime is 999913363. The reversal of 999913333 is 333319999.

It is a balanced prime because it is at equal distance from previous prime (999913303) and next prime (999913363).

It can be written as a sum of positive squares in only one way, i.e., 595018449 + 404894884 = 24393^2 + 20122^2 .

It is an emirp because it is prime and its reverse (333319999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999913333 is a prime.

It is a super-2 number, since 2×999913333² = 1999653347022337778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999913303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499956666 + 499956667.

It is an arithmetic number, because the mean of its divisors is an integer number (499956667).

Almost surely, 2^999913333 is an apocalyptic number.

It is an amenable number.

999913333 is a deficient number, since it is larger than the sum of its proper divisors (1).

999913333 is an equidigital number, since it uses as much as digits as its factorization.

999913333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 531441, while the sum is 49.

The square root of 999913333 is about 31621.4062464021. The cubic root of 999913333 is about 999.9711101654.

It can be divided in two parts, 9999 and 13333, that added together give a palindrome (23332).

The spelling of 999913333 in words is "nine hundred ninety-nine million, nine hundred thirteen thousand, three hundred thirty-three".